TAMPA, FLA. -- Former Mayor Rudolph Giuliani slammed President Barack Obama as an Oval Office "disaster" during a speech Thursday to his homestate New York delegation.

"Boy, what a disaster as a leader," Giuliani said at the Hilton Clearwater Beach Hotel.

Chiding Obama as "Mr. Hope and Change," Giuliani said that the economy needed to be fixed when Obama came into the White House in 2009, but that the president had failed to do so.

"He's made it, by every measure, even his own, worse," said Giuliani, pointing to continuing high unemployment and other economic numbers.

Under four more years of Obama, Giuliani said, Americans would see more government. Under Republican Mitt Romney, he said, there would be "less government and more investment in people. That's what we're running on."

He also said that Obama had been a foreign policy failure who is seen as a "weakling" by Russia and Iran.

He said Obama needed to take a page out of President Ronald Reagan's book and convince Iran that "we might attack them. He has to convince them that we're willing to do it" even if there was no intention to actually do so.

"But the left-wing peace-niks would go crazy on him," Giuliani said.

He also said that Obama had looked to take "illegal and disgusting" advantage of the killing of Osama bin Laden by leaking secret information to boost his re-election bid.

Obama, Giuliani said, should leave the White House and "maybe teach at Harvard or something."

Looking locally, Giuliani said the GOP needs to keep control of the state Senate and hold on to gains the state made in the House in 2010.

But he also had a good word for Democratic Gov. Andrew Cuomo, saying that Cuomo had thus far shown himself to be "somebody we can work with."